LibreCellular - Hackdot

Re:LibreCellular by kop316 on Monday June 21, 2021 @08:00AM (#27578327)

The Pinephones modem is interesting, as it actually has it's own Android OS that is stacked on top of Qualcomm's OS (I want to call it "Hexagon"? But I don't think that's right).

The folks that are freeing the Pinephone modem are focusing on the Android OS, not the underlying firmware.

The project is here: https://github.com/Biktorgj/pinephone_modem_sdk/

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Re:LibreCellular by comex on Monday June 21, 2021 @12:42PM (#27580903)

Hexagon is the architecture of the DSP cores included in the modem, running in parallel with the ARM cores that run Linux/Android.

https://en.wikipedia.org/wiki/Qualcomm_Hexagon

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Re:LibreCellular by megous on Monday June 21, 2021 @09:30AM (#27578951)

Code for the large parts of the modem's OS running on the hexagon DSP cores are available on github, if you search long enough. A few mil. lines of code. Not everything though.

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Re:LibreCellular by newhouseb on Monday June 21, 2021 @10:34AM (#27579585)

This is surprising, is this intentional?

If so, what would one search for?

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Re:LibreCellular by kop316 on Monday June 21, 2021 @10:43AM (#27579649)

I'm a bit surprised too, as I assumed that is VERY proprietary.

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Re:LibreCellular by megous on Monday June 21, 2021 @03:02PM (#27582776)

Search for unique enough symbol names from the firmware blob.

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